/**
* Update the additional meta for a post ID.
*
* @since 1.1
* @param int $post_id Post ID
* @param [type] $new_meta New additional meta to update
* @return void
*/
function update_additional_meta($post_id, $new_meta)
{
$old_meta = get_post_meta($post_id, '_ac_additional_content', true);
if (!(!empty($new_meta) && is_array($new_meta))) {
if ($old_meta) {
// Delete old meta if new meta is empty.
delete_post_meta($post_id, '_ac_additional_content');
}
return;
}
$defaults = get_defaults();
// Validate the new settings
foreach ($new_meta as $key => $setting) {
if (!is_array($setting)) {
unset($new_meta[$key]);
continue;
}
$setting = array_merge($defaults, $setting);
// Filter content for users without the unfiltered_html capability.
$filter_content = current_user_can('unfiltered_html') ? false : true;
/**
* Filter html in additional content before it is saved to the database.
*
* @since 1.0
* @param bool $filter_content Filter content. True for users without the unfiltered_html capability.
*/
$filter_content = apply_filters('ac_additional_content_filter_html', $filter_content, $setting, $post_id);
if ($filter_content) {
$setting['additional_content'] = wp_filter_post_kses($setting['additional_content']);
}
if (is_empty_string($setting['additional_content'])) {
unset($new_meta[$key]);
continue;
}
foreach (array('prepend', 'append') as $addition) {
if ('on' !== $setting[$addition]) {
$setting[$addition] = $defaults[$addition];
}
}
$setting['priority'] = absint($setting['priority']) ? absint($setting['priority']) : 10;
$new_meta[$key] = $setting;
}
$new_meta = array_values($new_meta);
if (!empty($new_meta)) {
$_new_meta = array();
$priorities = sort_by_priority($new_meta);
foreach ($priorities as $priority) {
foreach ($priority as $option) {
$_new_meta[] = $option;
}
}
if ($_new_meta != $old_meta) {
update_post_meta($post_id, '_ac_additional_content', $_new_meta);
}
} elseif (empty($new_meta) && $old_meta) {
delete_post_meta($post_id, '_ac_additional_content');
}
}
/**
* Sets up the additional content options.
*
* @since 1.0
* @param integer $post_id (Optional) Post ID. If provided no filters arre added to the_content
* @return void
*/
private function setup_options($post_id = 0)
{
$this->options = array();
$post_id = absint($post_id);
$add_filters = true;
if ($post_id) {
// Don't add filters.
$add_filters = false;
} else {
$post_id = get_the_ID();
}
if (empty($post_id)) {
return;
}
// Get the additional content options from the database.
$options = get_post_meta($post_id, '_ac_additional_content', true);
if (!(!empty($options) && is_array($options))) {
return;
}
$this->options = $this->validate_options($options);
if (empty($this->options)) {
return;
}
// Get the priorities.
$priorities = array_unique(wp_list_pluck($this->options, 'priority'));
// Sort and group options by priority.
$this->options = sort_by_priority($this->options);
if ($add_filters) {
// store singular options
$this->options_singular = $this->options;
$this->options = array();
// Add a filter to the_content for every priority.
foreach ($priorities as $priority) {
add_filter('the_content', array($this, 'the_content'), $priority);
}
}
}
